bracing 托福GRE

1.The country is bracing itself for the threatened enemy invasion.

这个国家正准备奋起抵抗敌人入侵威胁。

2.He needs bracing.

他需要刺激。

3.The device comprises a mixing plastifying screw, a machine barrel, a screw driving system, a bracing frame and a bearing arranged on the bracing frame.

该装置包括混炼塑化和机筒，驱动系统，架以及装在架上轴承。